The United States Department of Transportation defines a major carrier or major airline carrier as a U.S.-based airline that posts more than $1 billion in revenue during a fiscal year, grouped accordingly as "Group III".[1]
According to FY2020 revenues, there were 18 major carriers who meet the requirement for Group III status.[2]
(*) - considered as one of the "Big 4" major U.S. national airlines[3][4]
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